# CC-Tweaked has an SSRF Protection Bypass with NAT64

Advisory record · `GHSA-5jh9-2h63-pw4q`

- **Identifiers:** `GHSA-5jh9-2h63-pw4q` · `CVE-2026-47695`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-918](https://cwe.mitre.org/data/definitions/918.html)
- **Tags:** [Server-side request forgery (SSRF)](https://agentprime.io/advisories/tag/ssrf.md)
- **Published:** 29 May 2026
- **Updated:** 29 May 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 29 May 2026, 20:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `cc.tweaked:cc-tweaked-1.21-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.20.1-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.20.4-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.20.5-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.20.6-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.19.3-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.19.4-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`
- `cc.tweaked:cc-tweaked-1.20-core` (Maven): affected `<1.119.0`; fixed in `1.119.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> CC-Tweaked core packages before 1.119.0 let Lua code bypass the HTTP filter that blocks private addresses on IPv6 servers with NAT64 routing. Anyone who can run Lua on a computer can reach internal IPv4 services through this bypass. Upgrade to 1.119.0.

Written 3 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 7.1 High, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0047, the 40th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:20 UTC: First seen by agentprime
- 31 Oct 2026, 14:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-5jh9-2h63-pw4q)

## Sources

- [GitHub Advisory Database: GHSA-5jh9-2h63-pw4q](https://github.com/advisories/GHSA-5jh9-2h63-pw4q)
- [OSV: GHSA-5jh9-2h63-pw4q](https://osv.dev/vulnerability/GHSA-5jh9-2h63-pw4q)
- <https://github.com/cc-tweaked/CC-Tweaked/security/advisories/GHSA-5jh9-2h63-pw4q>
- <https://github.com/cc-tweaked/CC-Tweaked>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-5jh9-2h63-pw4q>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-5jh9-2h63-pw4q/>. Everything for agents: <https://agentprime.io/llms.txt>.